THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
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The sequence of nucleotides in a section of RNA is:GCCAUACGAUCGWhat is the base sequence of the DNA sense strand?
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CGGUAUGCUAGC
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GCCATACGATCG
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CGGTATGCTAGC
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GCCAUACGAUCG
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Explanation:
Detailed explanation-1: -mRNA strand is complementary to template strand of DNA, while coding strand has same sequence as RNA (except thymine at the place of uracil). Hence, the sequence of bases in mRNA will be AUUCGAUG.
Detailed explanation-2: -A nucleic acid sequence, the messenger RNA or mRNA, is translated into the protein it encodes by means of transfer RNAs interacting with the ribosomal apparatus. Transfer RNAs bind to three nucleotides at a time and thus divide the nucleic acid sequence into triplet codons, each specifying one amino acid.
Detailed explanation-3: -However, mRNA does not consist of the same four bases as DNA. While DNA has the ATCG nitrogenous bases, RNA replaces thymine with uracil, making its bases AUCG.
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